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Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu |
Date: |
Mon, 10 Sep 2012 11:25:38 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2012-09-09 17:45, Avi Kivity wrote:
> On 09/07/2012 11:50 AM, Jan Kiszka wrote:
>>
>>> + } else {
>>> + cpu_physical_memory_rw(run->mmio.phys_addr,
>>> + run->mmio.data,
>>> + run->mmio.len,
>>> + run->mmio.is_write);
>>> + }
>>> +
>>> ret = 0;
>>> break;
>>> case KVM_EXIT_IRQ_WINDOW_OPEN:
>>>
>>
>> Great to see this feature for KVM finally! I'm just afraid that this
>> will finally break good old isapc - due to broken Seabios. KVM used to
>> "unbreak" it as it didn't respect write protections. ;)
>
> Can you describe the breakage?
Try "qemu -machine isapc [-enable-kvm]". Seabios is writing to some
read-only marked area. Don't recall where precisely.
Jan
--
Siemens AG, Corporate Technology, CT RTC ITP SDP-DE
Corporate Competence Center Embedded Linux
- [Qemu-devel] [PATCH 0/3] support kvm readonly memory slot in qemu, Liu Sheng, 2012/09/07
- [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu, Liu Sheng, 2012/09/07
- Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu, Jan Kiszka, 2012/09/07
- Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu, Avi Kivity, 2012/09/09
- Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu,
Jan Kiszka <=
- Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu, Kevin O'Connor, 2012/09/10
- Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu, Jan Kiszka, 2012/09/11
- Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu, Anthony Liguori, 2012/09/11
- Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu, Jan Kiszka, 2012/09/11
- Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu, Kevin O'Connor, 2012/09/11
Re: [Qemu-devel] [PATCH 3/3] support readonly memory feature in qemu, Avi Kivity, 2012/09/09